/*
 * Copyright (C) 2021 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


package com.example.library.util;

import ohos.agp.components.Attr;
import ohos.agp.components.AttrSet;
import ohos.agp.components.element.Element;
import ohos.agp.utils.Color;

import java.util.Optional;

/**
 * attr utils.
 */
public class AttrUtils {
  /**
   * get attr color.
   *
   * @param attrSet      AttrSet.
   * @param attrName     String.
   * @param defaultColor Color.
   * @return Color int value
   */
  public static int getAttrSetColor(AttrSet attrSet, String attrName, Color defaultColor) {
    if (attrSet == null || attrName == null || attrName.isEmpty()) {
      return defaultColor.getValue();
    }

    Optional<Attr> attrOptional = attrSet.getAttr(attrName);
    if (attrOptional == null || !attrOptional.isPresent()) {
      return defaultColor.getValue();
    }
    return attrOptional.get().getColorValue().getValue();
  }

  /**
   * get dimension.
   *
   * @param attrSet      AttrSet.
   * @param attrName     String.
   * @param defaultValue int.
   * @return dimension value.
   */
  public static int getDimension(AttrSet attrSet, String attrName, int defaultValue) {
    if (attrSet == null || attrName == null || attrName.isEmpty()) {
      return defaultValue;
    }
    Optional<Attr> attrOptional = attrSet.getAttr(attrName);
    if (attrOptional == null || !attrOptional.isPresent()) {
      return defaultValue;
    }
    return attrOptional.get().getDimensionValue();
  }

  /**
   * get float value.
   *
   * @param attrSet      AttrSet.
   * @param attrName     String.
   * @param defaultValue float.
   * @return float.
   */
  public static float getFloat(AttrSet attrSet, String attrName, float defaultValue) {
    if (attrSet == null || attrName == null || attrName.isEmpty()) {
      return defaultValue;
    }
    Optional<Attr> attrOptional = attrSet.getAttr(attrName);
    if (attrOptional == null || !attrOptional.isPresent()) {
      return defaultValue;
    }
    return attrOptional.get().getFloatValue();
  }

  /**
   * get attr int.
   *
   * @param attrSet    AttrSet.
   * @param attrName   String.
   * @param defaultInt int default.
   * @return int.
   */
  public static int getInt(AttrSet attrSet, String attrName, int defaultInt) {
    if (attrSet == null || attrName == null || attrName.isEmpty()) {
      return defaultInt;
    }
    Optional<Attr> attrOptional = attrSet.getAttr(attrName);
    if (attrOptional == null || !attrOptional.isPresent()) {
      return defaultInt;
    }
    return attrOptional.get().getIntegerValue();
  }

  /**
   * get attr boolean.
   *
   * @param attrSet      AttrSet.
   * @param attrName     String.
   * @param defaultValue boolean default.
   * @return boolean.
   */
  public static boolean getBoolean(AttrSet attrSet, String attrName, boolean defaultValue) {
    if (attrSet == null || attrName == null || attrName.isEmpty()) {
      return defaultValue;
    }
    Optional<Attr> attrOptional = attrSet.getAttr(attrName);
    if (attrOptional == null || !attrOptional.isPresent()) {
      return defaultValue;
    }
    return attrOptional.get().getBoolValue();
  }

  /**
   * get string value.
   *
   * @param attrSet      AttrSet.
   * @param attrName     String.
   * @param defaultValue String default.
   * @return String.
   */
  public static String getString(AttrSet attrSet, String attrName, String defaultValue) {
    if (attrSet == null || attrName == null || attrName.isEmpty()) {
      return defaultValue;
    }
    Optional<Attr> attrOptional = attrSet.getAttr(attrName);
    if (attrOptional == null || !attrOptional.isPresent()) {
      return defaultValue;
    }
    return attrOptional.get().getStringValue();
  }

  /**
   * get element.
   *
   * @param attrSet  AttrSet.
   * @param attrName String.
   * @return Element.
   */
  public static Optional<Element> getElement(AttrSet attrSet, String attrName) {
    if (attrSet == null || attrName == null || attrName.isEmpty()) {
      return Optional.empty();
    }
    Optional<Attr> attrOptional = attrSet.getAttr(attrName);
    if (attrOptional == null || !attrOptional.isPresent()) {
      return Optional.empty();
    }
    return Optional.of(attrOptional.get().getElement());
  }
}
